#!/usr/bin/env python
# coding: utf-8

# In[4]:


f1 = 1    #斐波那契数列第一种
f2 = 1
print(f1)
print(f2)
for fn in range(2,101):
    if fn == f1+f2:
        print(fn)
        f1,f2 = f2,fn


# In[8]:


f1 = 0     #斐波那契数列第二种
f2 = 1
while f2 < 100:
    print(f2)
    f1,f2 = f2,f1+f2


# In[2]:


import random    #优惠券
count = 0
z1 = set()
while True:
    a = 'abcdefghjklmnopqrstuvwsyz0123456789'
    aa = ''
    for i in range(6):
        aa += random.choice(a)
        print (aa)
        
    z1.add(aa)

    if len(z1) == 200:
        break

print(z1)


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